JPS6382288A - Rope type elevator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Applications) The present invention relates to a loaf type elevator. Here, a rope-type elevator is an elevator in which a car is suspended with a rope and the rope is installed on a pulley, and includes a car in which a car is installed at both ends of the rope and installed on a pulley (prior art). Most type elevators use only an electric motor as a driving means.

Furthermore, the driving means consumes a large amount of energy both when the cage is operated upward and when it is operated downward. Its energy consumption is
This corresponded to the amount of change in potential energy as the car moved up and down.

By the way, normally, a loaded object that has been raised using an elevator is lowered using the elevator again. For example, a person who goes up to the upper floor in an elevator in a building will later go down again in the elevator, and it is a three-dimensional! (L at the ril exit in the E market.
The car that was raised to the other garage will be lowered again using the elevator. Therefore, in the long run, the amount of positional energy required to bring the payload into the L field using the I-disembarkation and the amount of potential energy supplied when lowering the payload are approximately equal. It is. This means that the energy consumption of elevators can be significantly reduced.

However, conventional rope elevators have low energy efficiency because they consume energy when lowering the load instead of storing the energy that could be obtained.

(Problems to be Solved) It is an object of the present invention to provide an elevator with high energy efficiency, and for this purpose, the elevator can store energy obtained during the lowering operation of the elevator and utilize this energy during the upward operation. The problem is configuring the .

(Means) A means to solve this problem is to install a weight on the slave pulley with a rope in a rope elevator in which the car is attached to the main pulley with a rope, and to connect the slave pulley and the main pulley with a transmission. A rope-type elevator is constructed by connecting the transmission with a fixed shaft and providing a controller to the transmission. The control content of this controller is to control the gear ratio of the transmission according to the weight of the loaded object so that the supply and discharge of potential energy due to the lowering of the car is offset by the vertical movement of the weight. 9 Here, the term "rope" refers to a member that transmits tension, and includes belts and chains. Correspondingly, the term "pulley" includes pulleys and sprockets.

(Function) The rope elevator of the present invention includes a main pulley on which a cage is installed,
Since the slave pulley on which the weight is installed is configured to move up and down in opposition to each other, the demand for potential energy required for the lifting operation of the car is offset by the supply of potential energy due to the lowering of the weight, and the lowering operation of the car is It has the effect of canceling out the release of potential energy that occurs when the weight is absorbed by the absorption of potential energy by the upper field of the weight.Also, since the main pulley and the slave pulley have a transmission interposed between them, even if the weight of the loaded object changes, the speed will not change. Adjustment of the ratio serves to approximately balance the energy supply due to the lifting and lowering operations.

(Example) Example 9 of the present invention will be described with reference to U211.2.
Shafts 2.3 are connected to both sides of the stepped transmission 1 and installed at the top of the elevator 11, and a stepping motor 5 and a main sub 1 coget 6 are installed at the left end and center of the left shaft 2, respectively. A secondary sprocket 7 is installed at the right end of the 7, and a chain 8 is used to connect the upper sprocket 6 to a cage 9 for lifting and lowering.
erected, and the slave sp1 fuget 7 has a cage 9 whose lifting and lowering operations are carried out.
In contrast to this, a weight [0] is constructed using a chain 8 to constitute the main part of the 17-pu type elevator 4.

A TN control device 11 for controlling the drive of the stepping motor 5 and the gear ratio of the right-stage transmission 1 is provided near the left shaft 2, and the car 9 is provided with a load 12 mounted on the car 9.
The main sprocket 6 is provided with a position detector 14 for detecting the position of the car 9 based on the amount of rotation of the main sprocket 1, and the stepping motor 5. Right Danhen i! ! Wiring unit 11 weight measuring device 131 position detector 14 and controller 11 are wired 15.
Connect at...

Next, details of the it and lI control contents of the controller 11 will be explained with reference to the flowchart of FIG. When the load 12 is placed on the car 9, the weight measuring device 13 measures the weight iHjml of the load 12 and transmits the value to the controller 11 (step 1).
) 9 Next, the torque applied to the main sprocket 6 in the state where this J7? so that the difference between the torque and the torque transmitted to the left shaft 2 is minimized.
The gear ratio R1 of the stepped transmission 1 is set. First, the value of the gear ratio R that makes both torques equal is calculated using the following formula (step 2).

rL=r2 ・M/[rl (ml −Fm
2)] r1 is the diameter of the main sprocket 6, r2 is b'
The diameter of C sproget 7, ml is that of loaded object 12! II amount,
ml is the weight of the car 9, and M is the weight of the weight 1o.9If we are to strictly determine the gear ratio, we must consider the frictional resistance of the parts that move during the lifting operation, that is, the lifting operation system, and the chain 8.
Although it is necessary to take into account the weight, etc., it is omitted here.

After the calculation, the right gear transmission 1 is set to the gear ratio R1 closest to the value of the gear ratio R (step 3).

Next, the current position X of the car 4 is detected from the position detector 14 (step 4). If the car 4 is located on the first floor 16,
Start driving the stepping motor 5 in forward rotation to raise the car 9 (Step 5-1) 9 Conversely, if the car 9 is located on the second floor 17, start driving the stepping motor 5 in reverse rotation to raise the car 9. Lower it (Step 5-2)
. After starting the motor 5, the position detector 14 detects the moving amount Y of the elevator car 9, and when Y=1, the driving of the stepping motor 5 is stopped and the elevator operation is completed (step 6).

Although omitted for the sake of simplicity, in carrying out the present invention, safety of the car, the door of each floor entrance and exit, the operation system of the elevator, etc.
It is equipped with features designed for convenience of use.

In this embodiment, the energy consumption of the driving means is significantly lower than that of the conventional one, since the potential energy required to raise and lower the loaded object and the car is almost offset by raising and lowering the weight. This is because the lifting operation can be performed with a small torque.9 Next, the second embodiment will be explained with reference to FIG. Components common to those in the first embodiment are given the same reference numerals.

A shaft 2.3 is connected to both (ill) of the continuously variable transmission '::'':r18, and the left shaft 2 is provided with a main sprocket 6 and a stopper 19 on which a cage 9 is suspended by a chain 8, and a stopper 19 is installed on the left shaft 3. A slave sprocket 7 is provided, and a weight 10 is attached to the slave sprocket 7.
A chain 8 suspended from multiple sprockets 20...
The main part of the elevator 4 is constructed by constructing one end of the elevator.

The RfM of sprocket 20 without hanging weight 10 is,
One sprocket 20 is rotatably fixed to the ceiling 21 of the elevator 4 by a hanging member 22, two sprockets 20 and 20 are rotatably fixed to the upper part of the weight 10,
One slave sprocket 7 is fixed to the left shaft 3 integrally with the shaft 3, and one end of the chain 8 is not fixed to the hanging member 22 on the ceiling, and the chain 8 is connected to these four sprockets 7.2.
The total length of the 9-weight 10, which is constructed by winding around 0..., is approximately half the length of the lifting path of the weight 10.

Next, the control contents of the controller 11 will be explained with reference to the flowchart of FIG.

When the load 12 is placed on the car 9, the weight measuring device 13 measures the weight m1 of the load 12 on the car 9, and transmits the value to the controller 11.
(Step 1). The torque applied to the main sprocket 6 with this loaded object 12 on it and the weight 1
0, so that the torque transmitted to the left shaft 2 from the slave sprocket 7 via the continuously variable transmission 318 becomes equal.
Step 2) The value of the gear ratio R of the continuously variable transmission 2iS 18 is calculated using the following formula.

R=r2 M/[4rl <m2 on ml>] The meaning of each symbol is the same as in the formula of the first example. 1/7; 4 in L
The reason for this is that the weight 10 is suspended by a chain 8 made of four pieces of wood.

Then, the current position of the car 9 is detected (Step 3), and if it is located on the first floor 16, the gear ratio is reduced by a to accelerate the car 9 upward, and the gear ratio R1 of the continuously variable transmission 18 is changed to R- a (step 4-2). The value of this a is
rf7. It is determined from the inertial force of the lowering system, the friction force, the acceleration of the elevator specified in the specifications, etc. On the contrary, 2
If the car is located on floor 17, increase the gear ratio by a to accelerate and lower the car 9, and set the gear ratio R1 of the gearshift 2i 518 to R+a (step 4-2).

After setting the gear ratio, the stopper 19 is released,
The lifting operation is started and accelerated (Step 5) The acceleration state continues until the lifting movement amount Y of the 9 cars 9 reaches a predetermined value A (Step 6), and from the time when it reaches the value A, the gear ratio R is changed. ] is adjusted to R (step 7), the acceleration state changes to a constant speed state, and this state continues until the vertical movement amount Y reaches a predetermined value B (step 8). When the vertical movement amount Y exceeds B, the gear ratio R1 is adjusted to a value of 3R-21' (1 (step 9). To explain this equation, 111 becomes r<
-: If t, the new R] becomes R-1-a,
If R1 is R to a, the new R1 becomes R-a. The point is to decelerate the lift system using the same amount of force as the force required to accelerate it. The deceleration state continues until the amount of vertical movement Y reaches one floor (step 10), and when the vertical movement amount Y reaches 1, one stopper is activated and the vertical movement system is fixedly stopped (step 11). Operation is complete.

In this second example, not only the supply and discharge of potential energy associated with lifting and lowering operations are offset, but also the supply and discharge of kinetic energy associated with acceleration and deceleration during lifting and lowering operations are offset, significantly reducing energy consumption. It is something that shrinks. The energy consumption is approximately 1 of the lifting and lowering operation system and the friction resistance force. In actual use, if a certain amount of potential energy is stored in the weight 10 first, the potential energy of the weight 10 will be the J? The lifting operation can be performed until the friction resistance force is consumed. Furthermore, since the form of energy is potential energy, it is easy to replenish energy, and various driving means including feng shui power and human power can be used.

Also, the larger the amount of potential energy that the weight 10 can store, the better; however, in the second actual hfj example, the total length of the weight 10 is approximately half the length of its lifting path, so the amount of potential energy stored per unit volume is amount is maximum. Furthermore, since the weight 10 is suspended by a plurality of chains 8, the tension per chain is small, which is favorable for the lateral strength of the machine.
8 transmission loss is small.

(Effects) Since the elevator of the present invention offsets the supply and discharge of potential energy generated by raising and lowering the loaded object by the vertical movement of the weight, the energy consumption required for the raising and lowering operation is significantly reduced.

Moreover, since the structure is not so complicated, it is easy to install and apply it to a conventional elevator.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a first embodiment of the present invention, and FIG. 2 is a flowchart of its controller 11. FIG. 3 is a schematic diagram of a second embodiment, and FIG. 4 is a flow chart of its controller 11. 2 is a flowchart diagram of the device 11. FIG.

Claims (1)

[Scope of Claims] A rope-type elevator in which a car for carrying a load is installed on a main pulley with a rope, and a driving means equipped with a control means is connected to the main pulley, and the driving means is configured to carry at least a weight onto the rope. The control means is equipped with a pulley constructed by a pulley and a transmission connected to this pulley by a shaft, and the transmission of the driving means is connected to the main pulley so that the raising and lowering of the car and the raising and lowering of the weight are opposite to each other. , equipped with a weight measuring device that measures the weight of the loaded items on the basket and a position detector that detects the position of the basket, so that the potential energy supply and discharge caused by raising and lowering the basket is offset by the vertical movement of the weight. A rope-type elevator characterized in that the gear ratio of the transmission of the drive means is controlled in accordance with the weight of the loaded object.